US10539211B2 - Two rotational and one translational degrees of freedom parallel manipulator with high rotational capability - Google Patents

Two rotational and one translational degrees of freedom parallel manipulator with high rotational capability Download PDF

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US10539211B2
US10539211B2 US15/741,430 US201715741430A US10539211B2 US 10539211 B2 US10539211 B2 US 10539211B2 US 201715741430 A US201715741430 A US 201715741430A US 10539211 B2 US10539211 B2 US 10539211B2
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axis
turning
pair
branches
machine frame
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US20180372196A1 (en
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Lingmin Xu
Qinchuan LI
Wei Ye
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Zhejiang Sci Tech University ZSTU
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Zhejiang Sci Tech University ZSTU
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00—Programme-controlled manipulators
    • B25J9/003—Programme-controlled manipulators having parallel kinematics
    • B25J9/0072—Programme-controlled manipulators having parallel kinematics of the hybrid type, i.e. having different kinematics chains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/46—Gearings comprising primarily only links or levers, with or without slides with movements in three dimensions
    • F16H21/54—Gearings comprising primarily only links or levers, with or without slides with movements in three dimensions for conveying or interconverting oscillating or reciprocating motions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00—Programme-controlled manipulators
    • B25J9/003—Programme-controlled manipulators having parallel kinematics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00—Programme-controlled manipulators
    • B25J9/003—Programme-controlled manipulators having parallel kinematics
    • B25J9/0033—Programme-controlled manipulators having parallel kinematics with kinematics chains having a prismatic joint at the base

Definitions

  • the present disclosure relates to the technical field of robots, specifically to a two-turn-one-movement parallel mechanism with a large turning angle.
  • a parallel mechanism has the main feature of a movable platform that is connected to a machine frame through more than two branches, and usually the number of branches is equal to the number of degrees of freedom of the mechanism. Motors that drive the mechanism to move can all be installed close to the machine frame such that the mechanism has the advantages of high rigidity, large bearing capacity, high dynamic performance, etc. Therefore, the parallel mechanisms have been widely researched, and the parallel mechanisms with the spatial two-turn-one-movement degree of freedom are a major type and can be applied to fields such as complicated curve surface processing and motion simulation.
  • the technical problem to be solved by the present disclosure is to provide a two-turn-one-movement parallel mechanism with a large turning angle to overcome the defects in prior art.
  • the parallel mechanism has the advantages of a large turning angle, simple structure, high rigidity, large bearing capacity, and high dynamic performance.
  • a two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame, a movable platform, and a first branch, and two second branches that are connected between the machine frame and the movable platform in parallel, characterized in that,
  • the first branch includes a machine frame turning pair, a first moving pair slider, a first moving pair guide rod and a first universal joint that are connected between the machine frame and the movable platform in turn;
  • the axis of a first turning shaft, in connection with the first moving pair guide rod, of the first universal joint is parallel to the axis of the machine frame turning pair and vertical to the axis of the first moving pair;
  • each one of the second branches includes a second moving pair guide rod, a second moving pair slider, a second universal joint, a connecting rod and a movable platform turning pair, wherein the axis of a first turning shaft of each one of the second universal joints is parallel to the axis of each corresponding one of the second moving pairs, the axis of a second turning shaft, in connection with each corresponding one of the connecting rods, of each one of the second universal joints is parallel to the axis of each corresponding one of the movable platform turning pairs and vertical to the axis of each corresponding one of the second moving pairs;
  • the axis of the first turning pair of each one of the second universal joints in the two second branches is superimposed with and parallel to the axis of the machine frame turning pair in the first branch; and the axis of each one of the movable platform turning pairs in the two second branches is parallel to the axis of the second turning shaft of the first universal joint in the first branch.
  • a two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame, a movable platform, and two first branches and one second branch that are connected between the machine frame and the movable platform in parallel, characterized in that,
  • each one of the first branches includes a machine frame turning pair, a first moving pair slider, a first moving pair guide rod and a first universal joint that are connected between the machine frame and the movable platform in turn;
  • the axis of a first turning shaft, in connection with each corresponding one of the first moving pair guide rods, of each one of the first universal joints is parallel to the axis of each one of the machine frame turning pairs and vertical to the axis of each one of the first moving pairs;
  • each one of the second branches includes a second moving pair guide rod, a second moving pair slider, a second universal joint, a connecting rod and a movable platform turning pair, wherein the axis of a first turning shaft of each one of the second universal joints is parallel to the axis of each corresponding one of the second moving pairs, the axis of a second turning shaft, in connection with each corresponding one of the connecting rods, of each one of the second universal joints is parallel to the axis of each corresponding one of the movable platform turning pairs and vertical to the axis of each corresponding one of the second moving pairs;
  • the axis of a second turning shaft, in connection with the movable platform, of each one of the first universal joints in the two first branches is superimposed with and parallel to the axis of the movable platform turning pair in the second branch; and the axis of a first turning pair of the second universal joint in the second branch is parallel to the axis of each one of the machine frame turning pairs in the first branch.
  • a two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame, a movable platform, and two first branches, and two second branches that are connected between the machine frame and the movable platform in parallel, characterized in that,
  • each one of the first branches includes a machine frame turning pair, a first moving pair slider, a first moving pair guide rod and a first universal joint that are connected between the machine frame and the movable platform in turn;
  • the axis of a first turning shaft, in connection with each corresponding one of the guide rods, of each one of the first universal joints is parallel to the axis of each one of the machine frame turning pairs and vertical to the axis of each one of the first moving pairs;
  • each one of the second branches includes a second moving pair guide rod, a second moving pair slider, a second universal joint, a connecting rod and a movable platform turning pair, wherein the axis of a first turning shaft, in connection with each corresponding one of the second moving pair sliders, of each one of the second universal joints is parallel to the axis of each one of the second moving pairs, the axis of a second turning shaft, in connection with each corresponding one of the connecting rods, of each one of the second universal joints is parallel to the axis of each one of the movable platform turning pairs and vertical to the axis of each one of the moving pairs;
  • the axis of the first turning pair of each one of the second universal joints in the two second branches is superimposed with and is parallel to the axis of each one of the machine frame turning pairs in the first branches;
  • the axis of each one of the second turning shafts, in connection with the movable platform, of each one of the first universal joints in the two first branches is superimposed with and parallel to the axis of each corresponding one of the movable platform turning pairs in the second branches;
  • machine frame turning pairs of the two first branches are arranged symmetrically to the axis of each one of the second moving pairs of the two second branches.
  • the machine frame turning pair is formed through cooperation between rotating shafts on the first moving pair sliders and a first bearing base and a second bearing base
  • one of the correcting rods passes through a long hole on the other one of the connecting rods such that the two second branches are arranged in a crossed way; and the long hole is formed along the lengthwise direction of the correcting rod.
  • one of the correcting rods passes through a long hole on the other one of the connecting rods such that the two second branches are arranged in a crossed way; and the long hole is formed along the lengthwise direction of the correcting rod.
  • the parallel mechanism put forward by the present disclosure can execute spatial two-turn-one-movement motion, it has the advantages of simple structure, large turning angle, high rigidity, large bearing capacity, and high dynamic performance, and can be applied to fields such as complicated curve surface processing and motion simulation.
  • FIG. 1 is a space structural view of embodiment 1 of the present disclosure
  • FIG. 2 is a space structural view of embodiment 2 of the present disclosure
  • FIG. 3 is a space structural view of embodiment 3 of the present disclosure.
  • FIG. 4 is a space structural view of embodiment 4 of the present disclosure.
  • FIG. 5 is a space structural view of embodiment 5 of the present disclosure.
  • FIG. 6 is a space structural view of a first branch
  • FIG. 7 is a space structural view of a first moving pair
  • FIG. 8 is a space structural view of a second branch.
  • a two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame (not shown in the drawings), a movable platform 1 , and one first branch and two second branches that are connected between the machine frame and the movable platform in parallel.
  • the first branch includes a first bearing base 11 and a second bearing base 12 (the turning shafts of the two bearing bases are coaxial), a first moving pair slider 13 , a first moving pair guide rod 14 and a first universal joint 15 which are connected between the machine frame and the movable platform in turn, wherein the first bearing base and the second bearing base are installed on the machine frame, a rotating shaft 16 on the first moving pair slider is matched with the first bearing base and the second bearing base to form a machine frame turning pair, the first moving pair slider is matched with the first moving pair guide rod to form a first moving pair, and the axis of a first turning shaft of the first universal joint (namely the axis of the turning shaft, in connection with the guide rod, of the first universal joint) is parallel to the axis of the machine frame turning pair and vertical to the axis of the first moving pair (namely the moving axis of the first moving pair; the following is similar).
  • Each one of the second branches includes a second moving pair guide rod 21 , a second moving pair slider 22 , a second universal joint 23 , a connecting rod 24 and a movable platform turning pair 25 that are connected between the machine frame and the movable platform in turn, wherein each one of the second moving pair sliders and each corresponding one of the second moving pair guide rails form a second moving pair, each one of the second universal joints is connected with each corresponding one of the second moving pair sliders, the axis of a first turning shaft of each one of the second universal joints is parallel to the axis of each one of the second moving pairs, and the axis of a second turning shaft of each one of the universal joints (namely the axis of the turning shaft, in connection with each corresponding one of the connecting rods, of each one of the second universal joints) is parallel to the axis of each one of the movable platform turning pairs and vertical to the axis of each one of the second moving pairs.
  • the axis of the first turning pair of each one of the second universal joints in the two second branches is superimposed with and parallel to the axis of the machine frame turning pair in the first branch; and the axis of each one of the movable platform turning pairs in the two second branches is parallel to the axis of the second turning shaft of the first universal joint in the first branch (namely the axis of the turning shaft, in connection with the movable platform, of the first universal joint).
  • the driving pair is the moving pair on each one of the branches; the driving mode can be selected as ballscrews (not shown in the drawings); and when the driving pair moves, the mechanism performs the two-turn-one-movement motion, namely having three degrees of freedom.
  • a two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame (not shown in the drawings), a movable platform 1 , and two first branches and one second branch that are connected between the machine frame and the movable platform in parallel.
  • Each one of the first branches includes a first bearing base 11 and a second bearing base 12 (the turning shafts of the two bearing bases are coaxial), a first moving pair slider 13 , a first moving pair guide rod 14 and a first universal joint 15 which are connected between the machine frame and the movable platform in turn, wherein the first bearing bases and the second bearing bases are installed on the machine frame, a rotating shaft 16 on each one of the first moving pair sliders is matched with each corresponding one of the first bearing bases and each corresponding one of the second bearing bases to form a machine frame turning pair, each one of the first moving pair sliders is matched with each corresponding one the first moving pair guide rods to form a first moving pair, and the axis of a first turning shaft of each one of the first universal joints (namely the axis of the turning shaft, in connection with each corresponding one of the guide rods, of each one of the first universal joints) is parallel to the axis of each corresponding one of the machine frame turning pairs and vertical to the axis of the each corresponding one
  • the second branch includes a second moving pair guide rod 21 , a second moving pair slider 22 , a second universal joint 23 , a connecting rod 24 and a movable platform turning pair 25 that are connected between the machine frame and the movable platform in turn, wherein the second moving pair slider and the second moving pair guide rail form the second moving pair, the second universal joint is connected with the second moving pair slider, the axis of a first turning shaft of the second universal joint is parallel to the axis of the second moving pair, and the axis of a second turning shaft of the hook joint (namely the axis of the turning shaft, in connection with the connecting rod, of the second universal joint) is parallel to the axis of the movable platform turning pair and vertical to the axis of the second moving pair.
  • the axis of a second turning shaft of each one of the first universal joints (namely the axis of the turning shaft, in connection with the movable platform, of each one of the first universal joints) in the two first branches is superimposed with and parallel to the axis of the movable platform turning pair in the second branch; and the axis of a first turning pair of the second universal joint in the second branch is parallel to the axis of the machine frame turning pair in the first branch.
  • the driving pair is the moving pair on each one of the branches; the driving mode can be selected as ballscrews (not shown in the drawings); and when the driving pair moves, the mechanism performs the two-turn-one-movement motion, namely having three degrees of freedom.
  • a two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame (not shown in the drawings), a movable platform 1 , and two first branches and two second branches that are connected between the machine frame and the movable platform in parallel.
  • Each one of the first branches includes a first bearing base 11 and a second bearing base 12 (the turning shafts of the two bearing bases are coaxial), a first moving pair slider 13 , a first moving pair guide rod 14 and a first universal joint 15 which are connected between the machine frame and the movable platform in turn, wherein the first bearing bases and the second bearing bases are installed on the machine frame, a rotating shaft 16 on each one of the first moving pair sliders is matched with each corresponding one of the first bearing bases and each corresponding one of the second bearing bases to form a machine frame turning pair, each one of the first moving pair sliders is matched with each corresponding one the first moving pair guide rods to form a first moving pair, and the axis of a first turning shaft of each one of the first universal joints (namely the axis of the turning shaft, in connection with each corresponding one of the guide rods, of each one of the first universal joints) is parallel to the axis of each corresponding one of the machine frame turning pairs and vertical to the axis of the each corresponding one
  • Each one of the second branches includes a second moving pair guide rod 21 , a second moving pair slider 22 , a second universal joint 23 , a connecting rod 24 and a movable platform turning pair 25 that are connected between the machine frame and the movable platform in turn, wherein each one of the second moving pair sliders and each corresponding one of the second moving pair guide rails form a second moving pair, each one of the second universal joints is connected with each corresponding one of the second moving pair sliders, the axis of a first turning shaft of each one of the second universal joints is parallel to the axis of each one of the second moving pairs, and the axis of a second turning shaft of each one of the universal joints (namely the axis of the turning shaft, in connection with each corresponding one of the connecting rods, of each one of the second universal joints) is parallel to the axis of each one of the movable platform turning pairs and vertical to the axis of each one of the second moving pairs.
  • the axis of the first turning pair of each one of the second universal joints in the two second branches is superimposed with and is parallel to the axis of each one of the machine frame turning pairs in the first branches;
  • the axis of the second turning shaft of each one of the first universal joints (namely the axis of the turning shaft, in connection with the movable platform, of each one of the first universal joints) in the two first branches is superimposed with and parallel to the axis of each corresponding one of the movable platform turning pairs in the second branches.
  • the machine frame turning pairs of the two first branches are arranged symmetrically to the axis of each one of the second moving pairs of the two second branches.
  • the driving pair is the moving pair on each one of the branches; the driving mode can be selected as ballscrews (not shown in the drawings); the mechanism has a redundant drive; and when the driving pair moves, the mechanism performs the two-turn-one-movement motion, namely having three degrees of freedom.
  • a two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame (not shown in the drawings), a movable platform 1 , and one first branch and two second branches that are connected between the machine frame and the movable platform in parallel.
  • the structure of embodiment 4 is similar to that of embodiment 1, but is different in that the connecting rod structures in the two branches in embodiment 4 are different, wherein one of the connecting rods passes through a long hole on the other one of the connecting rods, and the two branches are arranged in a crossed way.
  • a two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame (not shown in the drawings), a movable platform 1 , and two first branches and two second branches that are connected between the machine frame and the movable platform in parallel.
  • the structure of embodiment 5 is similar to that of embodiment 3, but is different in that the connecting rod structures in the two branches in embodiment 5 are different, wherein one of the connecting rods passes through a long hole on the other one of the connecting rods, and the two branches are arranged in a crossed way.

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Abstract

Disclosed is a two-turn-one-movement parallel mechanism with a large turning angle, comprising a machine frame, a movable platform, a first branch and two second branches, characterized in that the first branch comprises a machine frame turning pair, a first moving pair slider, a first moving pair guide rod and a first universal joint; each one of the second branches comprises a second moving pair guide rail, a second moving pair slider, a second universal joint, a connecting rod and a movable platform turning pair; in the two second branches, the axis of the first turning pair of each one of the second universal joints is superimposed with and parallel to the axis of the machine frame turning pair in the first branch, and the axis of each one of the movable platform turning pairs is parallel to the second turning axis of the first universal joint in the first branch.

Description

CROSS REFERENCE TO RELATED APPLICATIONS
The present application is the US national stage of International Patent Application PCT/CN2017/077780 filed on Mar. 23, 2017, which, in turn, claims priority to Chinese Patent Application CN 201610934656.X filed on Oct. 25, 2016.
BACKGROUND OF THE INVENTION Technical Field
The present disclosure relates to the technical field of robots, specifically to a two-turn-one-movement parallel mechanism with a large turning angle.
Description of the Related Art
A parallel mechanism has the main feature of a movable platform that is connected to a machine frame through more than two branches, and usually the number of branches is equal to the number of degrees of freedom of the mechanism. Motors that drive the mechanism to move can all be installed close to the machine frame such that the mechanism has the advantages of high rigidity, large bearing capacity, high dynamic performance, etc. Therefore, the parallel mechanisms have been widely researched, and the parallel mechanisms with the spatial two-turn-one-movement degree of freedom are a major type and can be applied to fields such as complicated curve surface processing and motion simulation.
Existing two-turn-one-movement parallel mechanisms (CN 105904436 A, CN 104889978 A, CN 105397797 A) usually have ball pairs in branched chains. The ball pairs have a relatively small turning scope, so the whole parallel mechanism also has a relatively small turning angle, thus limiting the application of the mechanism. Therefore, it is very necessary to provide a two-turn-one-movement parallel mechanism with a simple structure and a large turning angle.
BRIEF SUMMARY OF THE INVENTION
The technical problem to be solved by the present disclosure is to provide a two-turn-one-movement parallel mechanism with a large turning angle to overcome the defects in prior art. The parallel mechanism has the advantages of a large turning angle, simple structure, high rigidity, large bearing capacity, and high dynamic performance.
The technical solution of the present disclosure is as follows.
A two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame, a movable platform, and a first branch, and two second branches that are connected between the machine frame and the movable platform in parallel, characterized in that,
the first branch includes a machine frame turning pair, a first moving pair slider, a first moving pair guide rod and a first universal joint that are connected between the machine frame and the movable platform in turn; the axis of a first turning shaft, in connection with the first moving pair guide rod, of the first universal joint is parallel to the axis of the machine frame turning pair and vertical to the axis of the first moving pair;
each one of the second branches includes a second moving pair guide rod, a second moving pair slider, a second universal joint, a connecting rod and a movable platform turning pair, wherein the axis of a first turning shaft of each one of the second universal joints is parallel to the axis of each corresponding one of the second moving pairs, the axis of a second turning shaft, in connection with each corresponding one of the connecting rods, of each one of the second universal joints is parallel to the axis of each corresponding one of the movable platform turning pairs and vertical to the axis of each corresponding one of the second moving pairs;
the axis of the first turning pair of each one of the second universal joints in the two second branches is superimposed with and parallel to the axis of the machine frame turning pair in the first branch; and the axis of each one of the movable platform turning pairs in the two second branches is parallel to the axis of the second turning shaft of the first universal joint in the first branch.
A two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame, a movable platform, and two first branches and one second branch that are connected between the machine frame and the movable platform in parallel, characterized in that,
each one of the first branches includes a machine frame turning pair, a first moving pair slider, a first moving pair guide rod and a first universal joint that are connected between the machine frame and the movable platform in turn; the axis of a first turning shaft, in connection with each corresponding one of the first moving pair guide rods, of each one of the first universal joints is parallel to the axis of each one of the machine frame turning pairs and vertical to the axis of each one of the first moving pairs;
each one of the second branches includes a second moving pair guide rod, a second moving pair slider, a second universal joint, a connecting rod and a movable platform turning pair, wherein the axis of a first turning shaft of each one of the second universal joints is parallel to the axis of each corresponding one of the second moving pairs, the axis of a second turning shaft, in connection with each corresponding one of the connecting rods, of each one of the second universal joints is parallel to the axis of each corresponding one of the movable platform turning pairs and vertical to the axis of each corresponding one of the second moving pairs;
the axis of a second turning shaft, in connection with the movable platform, of each one of the first universal joints in the two first branches is superimposed with and parallel to the axis of the movable platform turning pair in the second branch; and the axis of a first turning pair of the second universal joint in the second branch is parallel to the axis of each one of the machine frame turning pairs in the first branch.
A two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame, a movable platform, and two first branches, and two second branches that are connected between the machine frame and the movable platform in parallel, characterized in that,
each one of the first branches includes a machine frame turning pair, a first moving pair slider, a first moving pair guide rod and a first universal joint that are connected between the machine frame and the movable platform in turn; the axis of a first turning shaft, in connection with each corresponding one of the guide rods, of each one of the first universal joints is parallel to the axis of each one of the machine frame turning pairs and vertical to the axis of each one of the first moving pairs;
each one of the second branches includes a second moving pair guide rod, a second moving pair slider, a second universal joint, a connecting rod and a movable platform turning pair, wherein the axis of a first turning shaft, in connection with each corresponding one of the second moving pair sliders, of each one of the second universal joints is parallel to the axis of each one of the second moving pairs, the axis of a second turning shaft, in connection with each corresponding one of the connecting rods, of each one of the second universal joints is parallel to the axis of each one of the movable platform turning pairs and vertical to the axis of each one of the moving pairs;
the axis of the first turning pair of each one of the second universal joints in the two second branches is superimposed with and is parallel to the axis of each one of the machine frame turning pairs in the first branches; the axis of each one of the second turning shafts, in connection with the movable platform, of each one of the first universal joints in the two first branches is superimposed with and parallel to the axis of each corresponding one of the movable platform turning pairs in the second branches;
and the machine frame turning pairs of the two first branches are arranged symmetrically to the axis of each one of the second moving pairs of the two second branches.
The machine frame turning pair is formed through cooperation between rotating shafts on the first moving pair sliders and a first bearing base and a second bearing base
In the two second branches, one of the correcting rods passes through a long hole on the other one of the connecting rods such that the two second branches are arranged in a crossed way; and the long hole is formed along the lengthwise direction of the correcting rod.
In the two second branches, one of the correcting rods passes through a long hole on the other one of the connecting rods such that the two second branches are arranged in a crossed way; and the long hole is formed along the lengthwise direction of the correcting rod.
The present disclosure has the following beneficial effects:
The parallel mechanism put forward by the present disclosure can execute spatial two-turn-one-movement motion, it has the advantages of simple structure, large turning angle, high rigidity, large bearing capacity, and high dynamic performance, and can be applied to fields such as complicated curve surface processing and motion simulation.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
FIG. 1 is a space structural view of embodiment 1 of the present disclosure;
FIG. 2 is a space structural view of embodiment 2 of the present disclosure;
FIG. 3 is a space structural view of embodiment 3 of the present disclosure;
FIG. 4 is a space structural view of embodiment 4 of the present disclosure;
FIG. 5 is a space structural view of embodiment 5 of the present disclosure;
FIG. 6 is a space structural view of a first branch;
FIG. 7 is a space structural view of a first moving pair;
FIG. 8 is a space structural view of a second branch.
 DETAILED DESCRIPTION OF THE INVENTION
The present disclosure is described in further detail in conjunction with drawings attached to the specification. However, the present disclosure is not limited to the following embodiments.
Embodiment 1
As shown in FIGS. 1, 6, 7 and 8, a two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame (not shown in the drawings), a movable platform 1, and one first branch and two second branches that are connected between the machine frame and the movable platform in parallel.
The first branch includes a first bearing base 11 and a second bearing base 12 (the turning shafts of the two bearing bases are coaxial), a first moving pair slider 13, a first moving pair guide rod 14 and a first universal joint 15 which are connected between the machine frame and the movable platform in turn, wherein the first bearing base and the second bearing base are installed on the machine frame, a rotating shaft 16 on the first moving pair slider is matched with the first bearing base and the second bearing base to form a machine frame turning pair, the first moving pair slider is matched with the first moving pair guide rod to form a first moving pair, and the axis of a first turning shaft of the first universal joint (namely the axis of the turning shaft, in connection with the guide rod, of the first universal joint) is parallel to the axis of the machine frame turning pair and vertical to the axis of the first moving pair (namely the moving axis of the first moving pair; the following is similar).
Each one of the second branches includes a second moving pair guide rod 21, a second moving pair slider 22, a second universal joint 23, a connecting rod 24 and a movable platform turning pair 25 that are connected between the machine frame and the movable platform in turn, wherein each one of the second moving pair sliders and each corresponding one of the second moving pair guide rails form a second moving pair, each one of the second universal joints is connected with each corresponding one of the second moving pair sliders, the axis of a first turning shaft of each one of the second universal joints is parallel to the axis of each one of the second moving pairs, and the axis of a second turning shaft of each one of the universal joints (namely the axis of the turning shaft, in connection with each corresponding one of the connecting rods, of each one of the second universal joints) is parallel to the axis of each one of the movable platform turning pairs and vertical to the axis of each one of the second moving pairs.
The axis of the first turning pair of each one of the second universal joints in the two second branches is superimposed with and parallel to the axis of the machine frame turning pair in the first branch; and the axis of each one of the movable platform turning pairs in the two second branches is parallel to the axis of the second turning shaft of the first universal joint in the first branch (namely the axis of the turning shaft, in connection with the movable platform, of the first universal joint).
In this embodiment, the driving pair is the moving pair on each one of the branches; the driving mode can be selected as ballscrews (not shown in the drawings); and when the driving pair moves, the mechanism performs the two-turn-one-movement motion, namely having three degrees of freedom.
Embodiment 2
As shown in FIGS. 2, 6, 7 and 8, a two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame (not shown in the drawings), a movable platform 1, and two first branches and one second branch that are connected between the machine frame and the movable platform in parallel.
Each one of the first branches includes a first bearing base 11 and a second bearing base 12 (the turning shafts of the two bearing bases are coaxial), a first moving pair slider 13, a first moving pair guide rod 14 and a first universal joint 15 which are connected between the machine frame and the movable platform in turn, wherein the first bearing bases and the second bearing bases are installed on the machine frame, a rotating shaft 16 on each one of the first moving pair sliders is matched with each corresponding one of the first bearing bases and each corresponding one of the second bearing bases to form a machine frame turning pair, each one of the first moving pair sliders is matched with each corresponding one the first moving pair guide rods to form a first moving pair, and the axis of a first turning shaft of each one of the first universal joints (namely the axis of the turning shaft, in connection with each corresponding one of the guide rods, of each one of the first universal joints) is parallel to the axis of each corresponding one of the machine frame turning pairs and vertical to the axis of the each corresponding one of first moving pairs.
The second branch includes a second moving pair guide rod 21, a second moving pair slider 22, a second universal joint 23, a connecting rod 24 and a movable platform turning pair 25 that are connected between the machine frame and the movable platform in turn, wherein the second moving pair slider and the second moving pair guide rail form the second moving pair, the second universal joint is connected with the second moving pair slider, the axis of a first turning shaft of the second universal joint is parallel to the axis of the second moving pair, and the axis of a second turning shaft of the hook joint (namely the axis of the turning shaft, in connection with the connecting rod, of the second universal joint) is parallel to the axis of the movable platform turning pair and vertical to the axis of the second moving pair.
The axis of a second turning shaft of each one of the first universal joints (namely the axis of the turning shaft, in connection with the movable platform, of each one of the first universal joints) in the two first branches is superimposed with and parallel to the axis of the movable platform turning pair in the second branch; and the axis of a first turning pair of the second universal joint in the second branch is parallel to the axis of the machine frame turning pair in the first branch.
In this embodiment, the driving pair is the moving pair on each one of the branches; the driving mode can be selected as ballscrews (not shown in the drawings); and when the driving pair moves, the mechanism performs the two-turn-one-movement motion, namely having three degrees of freedom.
Embodiment 3
As shown in FIGS. 3, 6, 7 and 8, a two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame (not shown in the drawings), a movable platform 1, and two first branches and two second branches that are connected between the machine frame and the movable platform in parallel.
Each one of the first branches includes a first bearing base 11 and a second bearing base 12 (the turning shafts of the two bearing bases are coaxial), a first moving pair slider 13, a first moving pair guide rod 14 and a first universal joint 15 which are connected between the machine frame and the movable platform in turn, wherein the first bearing bases and the second bearing bases are installed on the machine frame, a rotating shaft 16 on each one of the first moving pair sliders is matched with each corresponding one of the first bearing bases and each corresponding one of the second bearing bases to form a machine frame turning pair, each one of the first moving pair sliders is matched with each corresponding one the first moving pair guide rods to form a first moving pair, and the axis of a first turning shaft of each one of the first universal joints (namely the axis of the turning shaft, in connection with each corresponding one of the guide rods, of each one of the first universal joints) is parallel to the axis of each corresponding one of the machine frame turning pairs and vertical to the axis of the each corresponding one of first moving pairs.
Each one of the second branches includes a second moving pair guide rod 21, a second moving pair slider 22, a second universal joint 23, a connecting rod 24 and a movable platform turning pair 25 that are connected between the machine frame and the movable platform in turn, wherein each one of the second moving pair sliders and each corresponding one of the second moving pair guide rails form a second moving pair, each one of the second universal joints is connected with each corresponding one of the second moving pair sliders, the axis of a first turning shaft of each one of the second universal joints is parallel to the axis of each one of the second moving pairs, and the axis of a second turning shaft of each one of the universal joints (namely the axis of the turning shaft, in connection with each corresponding one of the connecting rods, of each one of the second universal joints) is parallel to the axis of each one of the movable platform turning pairs and vertical to the axis of each one of the second moving pairs.
The axis of the first turning pair of each one of the second universal joints in the two second branches is superimposed with and is parallel to the axis of each one of the machine frame turning pairs in the first branches; the axis of the second turning shaft of each one of the first universal joints (namely the axis of the turning shaft, in connection with the movable platform, of each one of the first universal joints) in the two first branches is superimposed with and parallel to the axis of each corresponding one of the movable platform turning pairs in the second branches.
The machine frame turning pairs of the two first branches are arranged symmetrically to the axis of each one of the second moving pairs of the two second branches.
In this embodiment, the driving pair is the moving pair on each one of the branches; the driving mode can be selected as ballscrews (not shown in the drawings); the mechanism has a redundant drive; and when the driving pair moves, the mechanism performs the two-turn-one-movement motion, namely having three degrees of freedom.
Embodiment 4
As shown in FIG. 4, a two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame (not shown in the drawings), a movable platform 1, and one first branch and two second branches that are connected between the machine frame and the movable platform in parallel. The structure of embodiment 4 is similar to that of embodiment 1, but is different in that the connecting rod structures in the two branches in embodiment 4 are different, wherein one of the connecting rods passes through a long hole on the other one of the connecting rods, and the two branches are arranged in a crossed way.
Embodiment 5
As shown in FIG. 5, a two-turn-one-movement parallel mechanism with a large turning angle includes a machine frame (not shown in the drawings), a movable platform 1, and two first branches and two second branches that are connected between the machine frame and the movable platform in parallel. The structure of embodiment 5 is similar to that of embodiment 3, but is different in that the connecting rod structures in the two branches in embodiment 5 are different, wherein one of the connecting rods passes through a long hole on the other one of the connecting rods, and the two branches are arranged in a crossed way.

Claims (8)

What is claimed is:
1. A two-turn-one-movement parallel mechanism with a large turning angle, comprising a machine frame, a movable platform, and a first branch and two second branches that are connected between the machine frame and the movable platform in parallel, characterized in that,
the first branch comprises a machine frame turning pair, a first moving pair slider, a first moving pair guide rod and a first universal joint that are connected between the machine frame and the movable platform in turn; the axis of a first turning shaft, in connection with the first moving pair guide rod, of the first universal joint is parallel to the axis of the machine frame turning pair and vertical to the axis of the first moving pair;
each one of the second branches comprises a second moving pair guide rod, a second moving pair slider, a second universal joint, a connecting rod and a movable platform turning pair, wherein the axis of a first turning shaft of each one of the second hook joints is parallel to the axis of each corresponding one of the second moving pairs, the axis of a second turning shaft, in connection with each corresponding one of the connecting rods, of each one of the second universal joints is parallel to the axis of each corresponding one of the movable platform turning pairs and vertical to the axis of each corresponding one of the second moving pairs;
the axis of the first turning pair of each one of the second universal joints in the two second branches is superimposed with and parallel to the axis of the machine frame turning pair in the first branch; and the axis of each one of the movable platform turning pairs in the two second branches is parallel to the axis of the second turning shaft of the first universal joint in the first branch.
2. The two-turn-one-movement parallel mechanism with a large turning angle according to claim 1, characterized in that the machine frame turning pair is formed through cooperation between a rotating shaft on the first moving pair slider and a first bearing base and a second bearing base.
3. A two-turn-one-movement parallel mechanism with a large turning angle, comprising a machine frame, a movable platform, and two first branches and one second branch that are connected between the machine frame and the movable platform in parallel, characterized in that,
each one of the first branches comprises a machine frame turning pair, a first moving pair slider, a first moving pair guide rod and a first universal joint that are connected between the machine frame and the movable platform in turn; the axis of a first turning shaft, in connection with each corresponding one of the first moving pair guide rods, of each one of the first universal joints is parallel to the axis of each one of the machine frame turning pairs and vertical to the axis of each one of the first moving pairs;
the second branch comprises a second moving pair guide rod, a second moving pair slider, a second universal joint, a connecting rod and a movable platform turning pair, wherein the axis of a first turning shaft of the second universal joint is parallel to the axis of the second moving pair, the axis of a second turning shaft, in connection with the connecting rod, of the second universal joint is parallel to the axis of the movable platform turning pair and vertical to the axis of the second moving pair;
the axis of a second turning shaft, in connection with the movable platform, of each one of the first universal joints in the two first branches is superimposed with and parallel to the axis of the movable platform turning pair in the second branch; and the axis of a first turning pair of the second universal joint in the second branch is parallel to the axis of each one of the machine frame turning pairs in the first branch.
4. The two-turn-one-movement parallel mechanism with a large turning angle according to claim 3, characterized in that the machine frame turning pair is formed through cooperation between rotating shafts on the first moving pair slider and a first bearing base and a second bearing base.
5. A two-turn-one-movement parallel mechanism with a large turning angle, comprising a machine frame, a movable platform, and two first branches and two second branches that are connected between the machine frame and the movable platform in parallel, characterized in that,
each one of the first branches comprises a machine frame turning pair, a first moving pair slider, a first moving pair guide rod and a first universal joint that are connected between the machine frame and the movable platform in turn; the axis of a first turning shaft, in connection with each corresponding one of the guide rods, of each one of the first universal joints is parallel to the axis of each one of the machine frame turning pairs and vertical to the axis of each one of the first moving pairs;
each one of the second branches comprises a second moving pair guide rod, a second moving pair slider, a second universal joint, a connecting rod and a movable platform turning pair, wherein the axis of a first turning shaft, in connection with each corresponding one of the second moving pair sliders, of each one of the second universal joints is parallel to the axis of each one of the second moving pairs, the axis of a second turning shaft, in connection with each corresponding one of the connecting rods, of each one of the second universal joints is parallel to the axis of each one of the movable platform turning pairs and vertical to the axis of each one of the moving pairs;
the axis of the first turning pair of each one of the second universal joints in the two second branches is superimposed with and is parallel to the axis of each one of the machine frame turning pairs in the first branches; the axis of each one of the second turning shafts, in connection with the movable platform, of each one of the first universal joints in the two first branches is superimposed with and parallel to the axis of each corresponding one of the movable platform turning pairs in the second branches;
and the machine frame turning pairs of the two first branches are arranged symmetric to the axis of each one of the second moving pairs of the two second branches.
6. The two-turn-one-movement parallel mechanism with a large turning angle according to claim 5, characterized in that the machine frame turning pair is formed through cooperation between rotating shafts on the first moving pair sliders and a first bearing base and a second bearing base.
7. The two-turn-one-movement parallel mechanism with a large turning angle according to claim 2, characterized in that in the two second branches, one of the connecting rods passes through a long hole on the other one of the connecting rods such that the two second branches are arranged in a crossed way; and the long hole is formed along the length direction of the correcting rod.
8. The two-turn-one-movement parallel mechanism with a large turning angle according to claim 6, characterized in that in the two second branches, one of the connecting rods passes through a long hole on the other one of the connecting rods such that the two second branches are arranged in a crossed way; and the long hole is formed along the lengthwise direction of the correcting rod.
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Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106426096B (en) * 2016-10-25 2018-11-20 浙江理工大学 A kind of one mobile parallel connection mechanism of rotation of big corner two
CN108000495B (en) * 2017-12-13 2023-12-01 浙江理工大学 Two-rotation one-movement redundant driving parallel mechanism with large swing angle
CN108972509B (en) * 2018-08-07 2024-03-29 浙江理工大学 Three-degree-of-freedom parallel mechanism with multiple operation modes
CN109623793A (en) * 2019-02-12 2019-04-16 中国民航大学 A kind of three freedom redundancy parallel robot of space symmetr
CN109623794A (en) * 2019-02-12 2019-04-16 中国民航大学 A kind of two one-rotation parallel mechanisms of translation with redundancy branched chain
CN109812287A (en) * 2019-03-08 2019-05-28 安徽理工大学 A kind of freedom degree parallel connection hydraulic support of redundant drive
CN110116400A (en) * 2019-05-23 2019-08-13 浙江理工大学 A kind of PRS-PRU-PUR parallel institution
CN110142743B (en) * 2019-06-11 2022-03-11 常州大学 Zero-coupling-degree two-translation one-rotation parallel manipulator with analytic position positive solution
CN110154000B (en) * 2019-06-11 2021-12-21 常州大学 Three-translation one-rotation parallel robot with zero coupling degree and analytic position positive solution
CN110524517B (en) * 2019-09-04 2022-09-02 燕山大学 Large-corner non-coplanar two-rotation one-movement redundant drive parallel mechanism
CN110524516B (en) * 2019-09-04 2022-07-19 燕山大学 Redundant drive parallel mechanism containing redundant branched chain and closed-loop unit
CN110815187B (en) * 2019-11-19 2022-06-24 同济大学 Three-freedom-degree parallel mechanism without accompanying movement
CN111267070B (en) * 2020-01-02 2022-04-19 南京理工大学 Six-freedom-degree parallel robot mechanism
CN111515926B (en) * 2020-04-07 2021-10-26 上海工程技术大学 Parallel robot
CN112706152B (en) * 2020-12-28 2022-02-11 燕山大学 Parallel mechanism with 2R1T and 2T1R motion bifurcation characteristics
CN113246099B (en) * 2021-05-14 2024-05-03 江南大学 Three-degree-of-freedom parallel mechanism with continuous rotating shaft
CN114346995B (en) * 2021-12-30 2024-04-09 燕山大学 Modularized rope driving mechanical arm based on 2-UR parallel mechanism
CN114227649B (en) * 2022-01-06 2023-11-03 清华大学 Three-movement two-rotation five-degree-of-freedom parallel driving robot
CN114888780B (en) * 2022-04-29 2024-05-14 浙江理工大学 Three-branch 6+3-degree-of-freedom motion redundancy parallel mechanism
CN114654454B (en) * 2022-04-29 2023-07-25 浙江理工大学 Triple-branch motion redundancy parallel mechanism driven by moving pair
CN115015273A (en) * 2022-06-24 2022-09-06 广东工业大学 Automatic lens pose adjusting device, visual detection system and adjusting method
CN115771135A (en) * 2022-11-16 2023-03-10 天津大学 Parallel processing robot with large working space, few branched chains and five degrees of freedom

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3633764A (en) * 1970-01-22 1972-01-11 Mikromat Dresden Betrieb Tool-changing mechanism
US6896473B2 (en) * 2001-09-17 2005-05-24 Robert Bosch Gmbh Device for transmitting torque
US20080202274A1 (en) * 2007-02-23 2008-08-28 Microdexterity Systems, Inc. Manipulator

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5279176A (en) * 1992-07-20 1994-01-18 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Six-degree-of-freedom parallel "minimanipulator" with three inextensible limbs
CN101518898B (en) * 2009-04-09 2010-10-13 浙江理工大学 Parallel mechanism with three freedom degrees of twice rotation and once motion
CN101863132B (en) * 2010-05-21 2012-05-09 清华大学 Mechanical servo drive main transmission device for digital turrent punch press
FR2965207A1 (en) * 2010-09-28 2012-03-30 Francois Nicolas Parallel robot for use in e.g. industry, has passive joint equipped with three rotational degrees of freedom and three translational degrees, and two actuators whose fixed part is integrated with base
CN102990648A (en) * 2012-12-27 2013-03-27 广西大学 Parallel mechanism comprising prr open-loop sub-chain and rrrrr kinematic pair closed-loop sub-chain
CN103600347B (en) * 2013-11-26 2015-09-16 燕山大学 There is asymmetric two turn of one motion three-freedom-degree parallel mechanism of two continuous rotating shafts
CN103921268B (en) * 2014-04-15 2016-01-20 南京航空航天大学 For transporation by plane containing prrpr side chain parallel institution punching system
CN106426096B (en) * 2016-10-25 2018-11-20 浙江理工大学 A kind of one mobile parallel connection mechanism of rotation of big corner two
CN206344132U (en) * 2016-10-25 2017-07-21 浙江理工大学 A kind of big corner two rotates a mobile parallel connection mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3633764A (en) * 1970-01-22 1972-01-11 Mikromat Dresden Betrieb Tool-changing mechanism
US6896473B2 (en) * 2001-09-17 2005-05-24 Robert Bosch Gmbh Device for transmitting torque
US20080202274A1 (en) * 2007-02-23 2008-08-28 Microdexterity Systems, Inc. Manipulator

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